Talking-machine mechanism.



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A. 5. TALKSNG WMC NE MECHANISM.

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prima@ ATEN @FFQFQO ARCHIE E. PARNALL, 0F CHICAGO, ILLINGIS, ASSIGNOR TO FRANK W. WILLIAMS, 0F CHICAGO, ILLINOIS.

TALKING-MACHINE MECHANISM.

Specification of Letters Patent.

Patenten nay c.' reis.

.application filed September 18, 19m. Serial No. 120,319.

To all wlw/"1t t may Concern.'

Be it known that l, Ancrilr. E. PARNALL, a citizen of the United States, residing at Chicago, in the county of Cook and State of illinois, have invented new and useful improvements in Talki1ig-Machine Mechanism, of which the following is a ull,'

clear, concise, and exact description, referei te beingjiad to the accompanying drawing, forming a part of this speciiication.

My invention relates vto talking machine mechanism.

One of the objects or' my invention is to provide improved means whereby the tone arm may be connected with machines having diderent types of amplifiers.

ln the drawings, in which my invention is shownn Figure 1 is a vertical section of a talking machine in which the amplifier is inclosed in a casing below the record support; and

Fig. 2 is a vertical section of a talking machine in which the ainpliiier is mounted above the record support.

Referring to the drawings in detail and rst to Fig. 1., the talking machine here shown comprises a casing 107 driving transmission mechanism 11 mounted in the casing, a record support 12 driven from the mechanism 117 a tone arm 13, a sound box 14 supported by the tone arm, and an ampliiel 15 with which the tone arm 13 communicates inside the casing 10 and below the record support.

Referring to Fig. 2 the talking machine here shown comprises a casing 1G, having a top or cover 17 hinged thereto at 17a, an amplifier 18 supported by the cover 17 to swing therewith, a support or partition 19 for the driving transmission mechanism 20, and a record support 21 driven from the mechanism 20. The tone arm 13 and sound box 14- may be the same as in Fig. 1.

In order that the tone arm may be made to communicate either with an amplifier below the record support, as in Fig. 1, or with an amplier above the record support, as in Fig. 2, the tone arm has a straight tubular portion 22 for communication with the sound box, and a tubular elbow portion 23 for communication with the ampliiier rotatably and telescopically connected with the straight portion at 2li. ln order that the sound box may be used either with a hill and dale groove record or laterally undulating groove record, it is mounted to rotate on the tone arm about an axis lying in a vertical plane through the axis of the tone arm, from a position in which the needle is directly under the axis of the tone arm for use with the hill and dale groove record, to a position at one side of this vertical plane for use with a laterally undulating groove record. Forthis purpose the sound box has a central axial tubular projection 25 rotatably mounted in the down-turned tubular end portion 26 of the tone arm.

For holding the sound bon in position on the tone arm a screw 27 may be threaded through the tubular portion 26 andextend into a slot 28 in the projection 25. ln order that simply pulling out or pushing in the straight portion 22 of the tone arm will effeet rotation of the sound box a. link 29 has a pivotal connection 30 with the sound box adjacent the needle holder 30?-, and pivotal connections 31 and 22 on opposite' sides of the elbow portion 23 are provided `lor the other end of the link 29 so that the link can be connected to the elbow portion either in the position shown in Fig. 1 or in the position shown in Fig. 2.

rl`he rotation oi the sound box necessitates a tilting movement of the tone arm about a horizontal axis in addition to the swinging movement about a vertical axis. To provide for this movement about horizontal and vertical axes a `tubular support and connection 33 has a central hearing 34 in which is mounted a shaft or pin 35v which carries a cross shaft or pin 36 about which the tone arm tilts as an axis. fEhe pin 35 is held in position in the bearing 34- by means of a nut 37 threaded on the end of the pin and a coil spring 38 located between the nut and the bearing. rElie tubular support 33 is provided with a flange 39 which in the machine shown in Fig. 1 engages the support 10, and in the form of machine shown in Fig. 2 engages the support 41. rlhe tubular support 33 may be secured to the supports 40 and 41 by means of screws 42 ex? tending through the flange. ln the machine shown in Fig. 2 a felt Washer 43 may be provided to engage the entrance to the amplifier 18 to act as a cushion and provide a tight connection. .To remove the tone arm 13 from the machine of Fig. 1 and place it in the machine of Fig. 2 the screws 39 are removed, the link 29 disconnected .at 31. The portions 22 and 23 of the tone -arm are rotated rela-tive to each other through an an vle of 180 degrees. The link 29 is connecte with the elbow portion of `the tone arm at 32, the tubular support 33 is pla/eed in position as shown in Fig. 2 and the screws 39 are mserted to hold the support 33 in place. The top o r cover 17 is 'then turned down to the position shown in Fig. 2 bringing the smaller end of the amplifier down on the felt washer 43.

Having thus described my invention what l claim as new and desire to secure by Letters Patent is l. A talking machine mechanism comprising a record support, an extensible tone arm,

' a sound. box mounted to rotate about an y axis. lying in a vertlcal plane through the tion constructed so that it can be made to communicate either with an amplifier below the record support or with an amplilier above the record support.

2. A talking machine mechanism omprising a record support, an extensible tone arm, a sound box mounted to rotate about an axis lying in a vertical plane through the axis of the tone arm from a position in which the, needle will properly engage a laterally undulating groove record to a position in which it will properly engage a hill and dale groove record, said tone arm comprising two sections telescopically connected, one of said sections supporting said sound box and means whereby the extension of said tone arm will cause rotation of said sound box, said means including a link pivotally connected to said sound box and adapted to be pivotally Iconnected to the other section in two dii'erent positions of rotative adjustment.

In witness whereof, I have hereunto subscribed my name.

ARCI-ITE E. PARNALL. 

